What is the flavor of coffee washing treatment? what are the disadvantages of coffee washing treatment?

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Washing method

Due to too many shortcomings of the sun method, the water washing method was invented. Water washing is the most widely used treatment method at present, and the biggest difference from the sun method is the use of fermentation to remove the pectin layer.

one. Sift out floating beans (same sun method)

two. Pulp removal: the fresh fruit is sent to the pulp screening machine (pulping machine) to remove the peel and pulp. After the pulp screening machine, what is left is pectin, endocarp, silver peel and seeds. At the same time, immature fruits will be screened out at this stage because it is not easy to separate the pulp.

three. Fermentation to remove pectin: the purpose of this step is to use biological treatment to remove pectin. Transfer the peeled seeds with pectin into the fermentation tank. Although the name is water [washing] method, in fact, it does not really wash away pectin, but through the fermentation process, pectin is removed by biodecomposition. The fermentation process is about 16-36 hours, during which the pectin must be stirred frequently to accelerate the separation of pectin from the seeds.

four. Washing method: after the completion of fermentation and removal of pectin, the coffee beans will be washed again because the fermentation bacteria and impurities will remain on the coffee beans. In order to clean it, this step consumes a lot of water.

five. Drying and removing endocarp and silver peel: after washing, you also need to be sun-dried or machine-dried to reduce the water content to 12%. Washing method because the flesh has been removed, so in the drying process, do not have to worry about easy mildew like the sun method. Dried silver-skinned raw beans, which are not as hard as the sun-cured peels with pulp, can be obtained by hulling.

Advantages |

Since the flesh is removed in the first place, there is no need to worry about mildew like the sun method.

The appearance is more complete and the selling image is better.

Disadvantages |

The procedure is complex and tedious, so the cost is much higher than that of tanning.

A large amount of water will be used, and it will take 40 murmur50 liters of water to obtain 1 kilogram of coffee beans, so it is less used in areas where water resources are scarce.

Flavor |

Water washing fermentation will produce citric acid, malic acid and acetic acid and other acidic substances, these acid values will seep into the raw beans, making the sour taste of the beans more sour than the sun method. The sour taste and bright feeling are better than the sun-dried beans, and the flavor is cleaner.

In the former street [Kenya asali], for example, the delicate washing of K72 brings bright acidity to this bean with some rich berry aromas.

Qianjie recommended cooking parameters:

V60True 90 ℃ / 1RV 15 / time 2x 39,10 "

Flavor: rich virgin fruit flavor, brown sugar, sucrose sweetness